Conventional ag-pipe style drains can leave obvious trenches across sporting fields, resulting in an uneven surface and dangerous footing (as seen in this photo). Turf does not grow as well because of the gravel and aggregate used over the pipe and shallower soil covering the excavated area.
Sports fields are also affected by the type of soil. Ideally a good mix of clay and silt will retain sufficient moisture for good grass coverage. Unfortunately, this type of soil may not drain well in heavy rain. The grass variety grown on playing fields can also cause water issues. If the grass is too thick, water may not drain sufficiently – pools of water may still be a problem after heavy rain, with no apparent water running from traditional ag-pipe style sub-surface drains.
Capiphon™belt requires a narrow and shallow trench, as narrow as 10 cm rather than the 45 cm needed for conventional drainage. This shallow trench can be backfilled with sandy loam or coarse sand. There is significant reduction in problems such as sunken trench surfaces or patchy grass as the grass will easily grow over the loam or sandy backfill.